The Green Bank fast pulsar survey (gb4) published its results in 1996 and 1997 with a total of 5 new pulsars discovered.
It detected a total of 83 pulsars.
The fastest pulsar discovered was J1518+4904 with a period of 40.93499 milliseconds and the slowest pulsar was J2302+6028 with a period of 1.2064 seconds.
The smallest pulsar dispersion measure was J1518+4904 with a DM of 11.61139 pc/cc and the largest pulsar dispersion measure was J2302+6028 with a DM of 156.7 pc/cc. There were a total of 594 pulsars known before the first discovery was published. This survey increased the total amount of known pulsars by 1.0%.